after a certain amount of tries it gives me a crash error message (all very similar to this), so i cant beat the game
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FATAL ERROR in
action number 1
of Other Event: User Defined 0
for object o_inventory_slot:
DoSub :2: undefined value
at gml_Object_o_inventory_slot_Other_10
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stack frame is
gml_Object_o_inventory_slot_Other_10 (line -1)
called from - gml_Script___inventoryrebuild (line -1) - <unknown source line>
gml_Script___after_shoot
gml_Object_o_knight_Other_7